The 27-year-old was replaced after just four minutes by left-back Kieran Gibbs, and joins Abou Diaby, Lukasz Fabianski, Tomas Rosicky and Andre Santos on the treatment table.

“He has a groin strain. That's usually three weeks," Wenger told reporters.

Winger Theo Walcott gave the Gunners the lead after just 51 seconds – latching onto an Aaron Ramsey through-ball - but an error from right-back Bacary Sagna let Everton back into the game through midfielder Marouane Fellaini.

Wenger, who identified the Belgian as a threat ahead of the clash, felt that the home side’s direct style of play was a constant threat to the Gunners and felt a share of the spoils was a fair outcome.

"We had a good start and after that I felt Everton came back. Their direct game was always a threat with Fellaini," he added.

"We have regrets on the goal we conceded but overall, I believe that 1-1 is a fair result.

"It was a game of remarkable intensity. We needed to show great spirit today to get away with a point because they were up for it. Overall I can only say I'm pleased with the effort we have put in the game."